25804142 has 32 divisors (see below), whose sum is σ = 49291200. Its totient is φ = 9854208.

The previous prime is 25804127. The next prime is 25804151. The reversal of 25804142 is 24140852.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2834 + ... + 7722.

It is an arithmetic number, because the mean of its divisors is an integer number (1540350).

Almost surely, 2^25804142 is an apocalyptic number.

25804142 is a deficient number, since it is larger than the sum of its proper divisors (23487058).

25804142 is a wasteful number, since it uses less digits than its factorization.

25804142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4940.

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 25804142 is about 5079.7777510438. Note that the first 4 decimals coincide. The cubic root of 25804142 is about 295.5038483317.

Adding to 25804142 its reverse (24140852), we get a palindrome (49944994).

The spelling of 25804142 in words is "twenty-five million, eight hundred four thousand, one hundred forty-two".